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A130418 Triangle (of n terms per row) where t(n,m) = the m-th positive integer which is coprime to n!. 1
1, 1, 3, 1, 5, 7, 1, 5, 7, 11, 1, 7, 11, 13, 17, 1, 7, 11, 13, 17, 19, 1, 11, 13, 17, 19, 23, 29, 1, 11, 13, 17, 19, 23, 29, 31, 1, 11, 13, 17, 19, 23, 29, 31, 37, 1, 11, 13, 17, 19, 23, 29, 31, 37, 41, 1, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 1, 13, 17, 19, 23, 29, 31, 37, 41, 43 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..76.

EXAMPLE

Triangle starts

.1

.1..3

.1..5..7

.1..5..7.11

.1..7.11.13.17

.1..7.11.13.17.19

.1.11.13.17.19.23.29

.1.11.13.17.19.23.29.31

.1.11.13.17.19.23.29.31.37

.1.11.13.17.19.23.29.31.37.41

.1.13.17.19.23.29.31.37.41.43.47

.1.13.17.19.23.29.31.37.41.43.47.53

.1.17.19.23.29.31.37.41.43.47.53.59.61

.1.17.19.23.29.31.37.41.43.47.53.59.61.67

.1.17.19.23.29.31.37.41.43.47.53.59.61.67.71

CROSSREFS

Cf. A119992, A130419.

Sequence in context: A254344 A278032 A016600 * A038871 A209819 A193648

Adjacent sequences:  A130415 A130416 A130417 * A130419 A130420 A130421

KEYWORD

nonn,tabl

AUTHOR

Leroy Quet, May 25 2007

EXTENSIONS

More terms from R. J. Mathar, Jun 15 2007

STATUS

approved

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Last modified October 26 04:27 EDT 2021. Contains 348256 sequences. (Running on oeis4.)